perm filename VERIFY.SAI[SYS,HE]6 blob sn#081517 filedate 1974-01-16 generic text, type C, neo UTF8
COMMENT ⊗   VALID 00014 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00003 00002	ifc declaration(distst)≠check_type(define) thenc
C00006 00003		COMMENT	VERIFY - the verification message procedure (variables)
C00010 00004	α	VERIFY cont. (TEST1, SCAN)
C00020 00005	α	VERIFY cont. (SCANSET, HSTGRM, COLWHEEL)	
C00022 00006	α	VERIFY cont. (CNTRST, FINECALL)	
C00024 00007	α	VERIFY cont. (DPYSHW)	
C00026 00008	α	VERIFY cont. (TSIG-line significance function)	
C00032 00009	α	VERIFY cont. (COLINT - chooses color filter for best contrast)	
C00035 00010	α	VERIFY - start of body - initialize
C00037 00011	α	VERIFY body cont. - main loop
C00039 00012	α	VERIFY body cont. - return results	
C00041 00013	SETCOR - for main program debugging mode
C00043 00014	main program starts here
C00047 ENDMK
C⊗;
ifc declaration(distst)≠check_type(define) thenc

BEGIN "VERIFY" COMMENT THIS IS THE EDGE AND LINE VERIFIER;

DEFINE DISTST="FALSE";	COMMENT  controls compilation of display code;
DEFINE MAIN="TRUE";	COMMENT	 defines this as a main program;
REQUIRE -1 NEW_ITEMS;
REQUIRE "PREAMB.SAI[SYS,HE]" SOURCE_FILE;
REQUIRE "HELIB[1,3]" LIBRARY;

ifc distst thenc

	REQUIRE "DPYSUB.HDR[SYS,HE]" SOURCE_FILE;

	endc

STRING JOB;

DEFINE	CALL_JOB="JOB",
	THIS_JOB="""VERIFY""",
	DEB_JOB="DEB_VER",
	TYP_JOB="TYP_VER";

elsec DEFINE MAIN="FALSE"; endc
ifc distst thenc

	EXTERNAL PROCEDURE FADCHG(REAL X,Y;PROCEDURE F);
	EXTERNAL PROCEDURE FRDCHG(REAL X,Y;PROCEDURE F);

	endc;

INTEGER  SHORT L, W, DEBUG;

comment
	to use this with another program, define DISTST either true or
	false (TRUE if you want display capabilities) 
	before requiring this file

	the requiring program must require PREAMB.SAI and HELIB
	(and DPYSUB.HDR[SYS,HE] if DISTST is true) and must
	contain the following DEFINES:

	CALL_JOB is the string variable containing the logical name of the
		just calling the message procedure, for sending this return
		message.  If you want output to go to the console instead,
		JOB←"TTY"
	THIS_JOB is the logical name of the job requiring this file
	DEB_JOB is the DEB_... flag in the global model for this job
	TYP_JOB is the TYP_... flag in the global model for this job	
	GIVE_JOB is the name of the procedure which gets the result instead
		of VER_RESULT if CALL_JOB=THIS_JOB	;
	COMMENT	VERIFY - the verification message procedure (variables)

	X1, Y1 is the coordinate of the starting point
	X2, Y2 is the coordinate of the ending point
	TV is the number of the camera to use
	COLOR is the number of the color filter to use (0-3)
		anything else for all filters
	FLAG is TRUE to scan entire space between points,
		FALSE to scan until two successive failures found

	returns message procedure VER_RESULT with integer array
		argument RESULT[0:N,0:2] where N is the number of
		tests, RESULT[i,0],RESULT[i,1] is the coordinate of
		the point on (X1,Y1)-(X2,Y2) about which the test
		was made, RESULT[i,2] is the test result (boolean)
		RESULT[0,0] contains N, RESULT[0,1] contains the
		number of successful tests, RESULT[0,2] contains
		the % of sucessful tests	;

MESSAGE PROCEDURE VERIFY(INTEGER X1, Y1, X2, Y2, TV, COLOR;
    BOOLEAN FLAG);
	BEGIN "VERIF"
	SHORT INTEGER P1X, P2X, P1Y, P2Y, W2, CLP1, CLP2, RIG, BOT,
		REACNT, CNT, N, T, I, X, Y, XX, YY, FRA;
	SHORT REAL XINC, YINC, REA, QNOISE, TX, TY, LW, LNM, A, B, C, D, 
		AV1, AV2, OFFSET, DI, OFFSAVE, OFFH, SHFT;
	EXTERNAL SHORT INTEGER BCLIP, TCLIP, STVFL, IND, TVCAM, TVWORD,
		FLINE, LLINE, RSIDE, LSIDE;
	SAFE SHORT INTEGER ARRAY VALUES[1:L*W*2];
	SAFE OWN SHORT INTEGER ARRAY HISTO[0:16];
	BOOLEAN OUTSID, DEBUGX, COLFLG, OK;

	EXTERNAL PROCEDURE SENSINIT(BOOLEAN FLAG);
	EXTERNAL INTEGER PROCEDURE GIOWD(INTEGER ARRAY FOO);
	EXTERNAL PROCEDURE TVIN;
	EXTERNAL PROCEDURE ACC(BOOLEAN PROCEDURE T;BOOLEAN F;INTEGER C,M);
	EXTERNAL PROCEDURE INTPNT;
	EXTERNAL INTEGER PROCEDURE GETPNT(INTEGER X,Y);
	EXTERNAL INTEGER PROCEDURE DDACO(INTEGER DAC);
	EXTERNAL PROCEDURE CWHEEL(INTEGER I);

	REQUIRE "⊂⊃||" DELIMITERS;
	DEFINE  CRLF=⊂'15&'12⊃, TTEST=⊂3.087⊃, α=⊂COMMENT⊃,
 		IFTYPE=⊂IF TYP_JOB THEN ⊃, LENG=⊂4⊃, WIDTH=⊂2⊃;

	α	LENG AND WIDTH CONTROL OPERATOR SIZE AND SHAPE
			(UNLESS CHANGED IN DEBUGGING MODE)
		WIDTH IS THE NUMBER OF POINTS PERPENDICULAR TO THE EDGE
		LENG IS THE NUMBER OF POINTS PARALLEL TO THE EDGE
		LENG=1, WIDTH=5 IS THE PURE EDGE OPERATOR
		LENG=5, WIDTH=1 IS THE PURE LINE OPERATOR;
α	VERIFY cont. (TEST1, SCAN);

	PRELOAD_WITH [8] 0;
	SAFE SHORT OWN REAL ARRAY CONVLT[0:3,1:2];

	      α CONTRAST AND TARGET FOR 4 COLOR FILTERS
		      0-RED,1-BLUE,2-GREEN,3-WHITE;

α	accomodation test routine ;

	SIMPLE BOOLEAN PROCEDURE TEST1(REFERENCE INTEGER I1,I2);
		BEGIN
		IF ¬STVFL THEN TVIN;
		I1 ← GETPNT(X, Y);
		I2 ← GETPNT(XX, YY);
		RETURN(ABS(I1-I2)≥11);
		END;
α return X,Y coordinates of point in rectangle given by:
	TX,TY is coordinate of point on line
	OFFSET is offset from line
	DI is index from offset
	I,J are indicies in rectangle (0≤I≤L-1, 0≤J≤W-1)
    OUTSID set TRUE if point outside buffer, not changed otherwise;

	SIMPLE PROCEDURE SCAN(SHORT REAL DI; SHORT INTEGER I, J);
		BEGIN
		SHORT REAL IND;

		IND ← OFFSET+DI+(IF DI>0 THEN J ELSE -J);
		X ← TX+D*IND+C*I-A+.5;
		Y ← TY-C*IND+D*I-B+.5;
		IF ¬(0≤X≤RIG∧0≤Y≤BOT) THEN
			BEGIN "SCANA"
			OUTSID ← TRUE;
			OUTSTR("POINT OUTSIDE BUFFER - VERIFY"&CRLF);
			END "SCANA";
		END;
α	VERIFY cont. (SCANSET, HSTGRM, COLWHEEL)	;

α set up constants for scanning the operator;

	PROCEDURE SCANSET;
		BEGIN
		SHORT REAL TF;

		A ← P2Y-P1Y;
		B ← P2X-P1X;
		TF ← SQRT(A↑2+B↑2);
		C ← B/TF;
		D ← A/TF;
		N ← TF/L;
		IF N>15.0∧FLAG THEN N←15.0;
		XINC ← B/N;
		YINC ← A/N;
		A ← C*L/2.0;
		B ← D*L/2.0;
		W2 ← W%2;
		IF W2<1 THEN W2←1;
		END;

α calculate histogram for current half of window;

	SIMPLE PROCEDURE HSTGRM;
		BEGIN "HSTG"
		SHORT INTEGER I, INTN, J;

		FOR I←0 STEP 1 UNTIL 16 DO HISTO[I]←0;
		FOR I←L-1 STEP -1 UNTIL 0 DO
		    FOR J←W-1 STEP -1 UNTIL 0 DO
			BEGIN
			SCAN(DI,I,J);
			IF OUTSID THEN RETURN;
			INTN←GETPNT(X,Y);
		        HISTO[INTN]←HISTO[INTN]+1;
			END;
		FOR I←0 STEP 1 UNTIL 15 DO HISTO[16]←HISTO[16]+HISTO[I];
		END "HSTG";

α change color filter;

	SIMPLE PROCEDURE COLWHEEL(INTEGER I);
		IF COLFILT_ACC≠I THEN 
			BEGIN INTEGER N;
			CWHEEL(COLFILT_ACC←I); 
			N←20000 ;
			WHILE N>0 DO N←N-1;
			END ;
α	VERIFY cont. (CNTRST, FINECALL)	;

α computes contrast achieved under present accomodation;

	SIMPLE REAL PROCEDURE CNTRST;
		BEGIN "CNTR"
		SHORT INTEGER I, J;
		SHORT REAL AVG1,AVG2;

		IF ¬STVFL THEN TVIN;
		OUTSID ← FALSE;
		CLP1 ← CLP2 ← 0;
		HSTGRM;
		IF OUTSID THEN RETURN(0);
		AVG1←0;
		FOR I←1 STEP 1 UNTIL 15 DO AVG1←AVG1+I*HISTO[I];
		AVG1←AVG1/HISTO[16];
		CLP1←HISTO[0]+HISTO[15];
		DI←-DI;
		HSTGRM;
		DI←-DI;
		IF OUTSID THEN RETURN(0);
		AVG2←0;
		FOR I←1 STEP 1 UNTIL 15 DO AVG2←AVG2+I*HISTO[I];
		AVG2←AVG2/HISTO[16];
		CLP2←HISTO[0]+HISTO[15];
		AVG2←AVG2-AVG1;
		RETURN(ABS(AVG2));
		END "CNTR";

α accomodates for maximum contrast;

	SIMPLE REAL PROCEDURE FINECALL;
		BEGIN
		OUTSID ← FALSE;
		SCAN(DI,L/2,W2);
		XX ← X;
		YY ← Y;
		SCAN(-DI,L/2,W2);
		IF OUTSID THEN RETURN(0);
		ACC(TEST1,TYP_VER,0,2);
		RETURN(CNTRST);
		END;
α	VERIFY cont. (DPYSHW)	;

	α debugging display outputs points used in test and values
	  then waits for input - P dumps current buffer and
	  N terminates debugging for this call;

ifc distst thenc

	PROCEDURE DPYSHW(REAL VAL1, VAL2);
		BEGIN
		EXTERNAL PROCEDURE PICSPL(BOOLEAN FLAG; STRING TITLE);
		INTEGER I,J, K, A1, A2;
		SAFE INTEGER ARRAY BUF[1:100];

		GETFORMAT(A1,A2);
		J ← GETPOG;
		IF J<0 THEN BEGIN OUTSTR("NO FRAME"&CRLF); RETURN; END;
		SETFORMAT(10,3);
		DPYSET(BUF);
		DPYBRT(1);
		DPYBIG(2);
		FADCHG(0,0,AIVECT);
		FOR I←L-1 STEP -1 UNTIL 0
		    DO FOR K←W-1 STEP -1 UNTIL 0 DO
			BEGIN
			SCAN(DI,I,K);
			FRDCHG(X+LSIDE,Y+FLINE,RPOINT);
			SCAN(-DI,I,K);
			FRDCHG(X+LSIDE,Y+FLINE,RPOINT);
			END;
		FRDCHG(100,300,RIVECT);
		DPYSST("V1="&CVF(VAL1)&"  V2="&CVF(VAL2));
		DPYOUT(J);
		I ← INCHWL;
		IF I="P" THEN PICSPL(TRUE,"VERIFIER DUMP");
		IF I="N" THEN BEGIN DEBUGX ← FALSE; RELPOG(FRA); END;
		RELPOG(J);
		SETFORMAT(A1,A2);
		END;

	elsec

	PROCEDURE DPYSHW(REAL A,B);
		RETURN;

	endc
α	VERIFY cont. (TSIG-line significance function)	;

	SIMPLE REAL PROCEDURE TSIG;
		BEGIN "STT"
		REAL SP, SM, SPQ, SMQ, SIGP, SIGM, I1, I2;
		SHORT INTEGER I, J, K;

		K ← OUTSID ← SP ← SM ← SPQ ← SMQ ← 0;
		IF ¬STVFL THEN TVIN;
		FOR I← L-1 STEP -1 UNTIL 0
		    DO FOR J←W-1 STEP -1 UNTIL 0 DO
			BEGIN "STTA"
			SCAN(DI,I,J);
			IF OUTSID THEN RETURN(0);
			K←K+1;
			VALUES[K] ← I1 ← GETPNT(X,Y);
			SCAN(-DI,I,J);
			IF OUTSID THEN RETURN(0);
			K ← K+1;
			VALUES[K] ← I2 ← GETPNT(X,Y);
			SP ← SP+I1;
			SPQ ← SPQ+I1↑2;
			SM ← SM+I2;
			SMQ ← SMQ+I2↑2;
			END;
		AV1 ← SP/LW;
		AV2 ← SM/LW;
		SIGP ← (SPQ-SP↑2/LW)/LNM MAX QNOISE;
		SIGM ← (SMQ-SM↑2/LW)/LNM MAX QNOISE;
		IF DEBUGX THEN
			BEGIN
			INTEGER A,B;
			GETFORMAT(A,B);
			SETFORMAT(3,0);
			FOR K←1 STEP 2 UNTIL LW*2 DO
				OUTSTR(CVS(VALUES[K]));
			OUTSTR("|||");
			FOR K←2 STEP 2 UNTIL LW*2 DO
				OUTSTR(CVS(VALUES[K]));
			OUTSTR(CRLF);
			SETFORMAT(A,B);
			END;
		RETURN(ABS((SP-SM)/(SQRT((SIGP+SIGM)/LW)*LW)));
		END "STT";
α	VERIFY cont. (COLINT - chooses color filter for best contrast)	;

	SIMPLE PROCEDURE COLINT;
		BEGIN "COLINT"
		LABEL MX;
		SHORT REAL HIAVG;
		SHORT INTEGER I,IMAX, A, B;

		GETFORMAT(A,B);
		SETFORMAT(0,3);
		DI←4.0;
		TX ← P1X + XINC*N/2;
		TY ← P1Y + YINC*N/2;
		FOR IND←3,1,0,2 DO
			BEGIN "COLCHG"
			IF COLFLG∧COLOR≠IND THEN CONTINUE;
			COLWHEEL(IND);
			IF ¬FIL_ACC[IND]∨CHANGE_ACC THEN
				BEGIN
				SENSINIT(TYP_VER);
				FIL_ACC[IND] ← AUTO_ACC;
				END ELSE AUTO_ACC ← FIL_ACC[IND];
			CONVLT[IND,1]←FINECALL;
			CONVLT[IND,2]←DAC_ACC;
			IFTYPE OUTSTR((CASE IND OF ("RED","BLUE","GREEN",
				"CLEAR"))&"FILTER:	CONTRAST="&
				CVF(CONVLT[IND,1])&"   DAC_ACC="&
				CVF(CONVLT[IND,2])&CRLF);
			IF CONVLT[IND,1]≥11.0 THEN GO TO MX;
			END "COLCHG";
		IF ¬COLFLG THEN
			BEGIN "GETMAX"
			IMAX←3;
			HIAVG←CONVLT[3,1];
			FOR I←2 STEP -1 UNTIL 0 DO
			    IF CONVLT[I,1]>HIAVG THEN 
				BEGIN HIAVG←CONVLT[I,1]; IMAX←I; END;
			COLWHEEL(IMAX);
		 	IF TVCAM=1 THEN 
				BEGIN
				IF CONVLT[IMAX,2]≠DAC_ACC THEN 
					DDACO(CONVLT[IMAX,2]);
				AUTO_ACC←FIL_ACC[IMAX];
				END;
			END "GETMAX";
MX:		IFTYPE OUTSTR("BEST FILTER IS "&(CASE COLFILT_ACC OF
			("RED","BLUE","GREEN","CLEAR")) & CRLF);
		SETFORMAT(A,B);
		END "COLINT";
α	VERIFY - start of body - initialize;

	TVCAM ← TV;
	DEBUGX ← DEBUG∨DEB_JOB;
ifc ¬main thenc L←LENG; W ← WIDTH; endc
	LNM ← (LW ← L*W)-1;
	FLINE ← ((Y1 MIN Y2)-20) MAX 15;
	LLINE ← ((Y1 MAX Y2)+20) MIN 250;
	LSIDE ← ((X1 MIN X2)-20) MAX 15;
	RSIDE ← ((X1 MAX X2)+20) MIN 330;
	BOT ← LLINE-FLINE+1;
	RIG ← RSIDE-LSIDE+1;
	P1X ← X1-LSIDE;
	P2X ← X2-LSIDE;
	P1Y ← Y1-FLINE;
	P2Y ← Y2-FLINE;
	I ← ((RIG DIV 9)+1)*BOT;
	SCANSET;
		BEGIN "INNER"
		SAFE SHORT INTEGER ARRAY BUFR[0:I], RESULT[0:N,0:2];
		TVWORD ← GIOWD(BUFR);
		TVIN;
		INTPNT;
		CWHEEL(6);
		COLFILT_ACC ← IND;
		COLFLG ← 0≤COLOR≤3;
		COLINT;
		DI←1.5;
		CNT ← OFFSET←REACNT←0;
		QNOISE ← ((1+BCLIP-TCLIP)/256)↑2;
		TX ← P1X+XINC;
		TY ← P1Y+YINC;
		OK ← TRUE;

ifc distst thenc

		IF DEBUGX THEN
			BEGIN 
			FRA ← GETPOG;
			IF FRA<0 THEN OUTSTR("NO FRAME"&CRLF) ELSE
				BEGIN SAFE INTEGER ARRAY BUF[1:20];
				DPYSET(BUF);
				FADCHG(LSIDE,FLINE,AIVECT);
				FRDCHG(RSIDE,FLINE,RVECT);
				FRDCHG(RSIDE,LLINE,RVECT);
				FRDCHG(LSIDE,LLINE,RVECT);
				FRDCHG(LSIDE,FLINE,RVECT);
				DPYOUT(FRA);
				END;
			END;
	endc
α	VERIFY body cont. - main loop;

		FOR T←4 STEP 1 UNTIL N DO
			BEGIN "LOOP"
			LABEL L1,L2;

			CNT ← CNT+1;
			TX ← TX+XINC;
			TY ← TY+YINC;
			REA←TSIG;
			IF DEBUGX THEN DPYSHW(REA,OFFSET);
			SHFT ← 0;
			OFFH ← OFFSAVE←OFFSET;
			IF REA<TTEST THEN
			    BEGIN "ACO"
			    IF TCLIP≠BCLIP∨¬(1.≤AV1≤14.)∨¬(1.≤AV2≤14.)
				THEN BEGIN
				FINECALL;
				QNOISE ← ((1+BCLIP-TCLIP)/256)↑2;
				REA ← TSIG;
				IF DEBUGX THEN DPYSHW(REA,OFFSET);
				IF REA≥TTEST THEN GO TO L1;
				END;
			    WHILE TRUE DO
				BEGIN "SHIFT"
				SHFT←IF SHFT≤0 THEN ABS(SHFT)+1.0 ELSE -SHFT;
				OFFSET ← OFFH+SHFT;
				IF ABS(OFFSET)>5.0∨ABS(SHFT)>2.0 THEN
				    BEGIN
				    OFFSET ← OFFSAVE;
				    GO TO L2;
				    END;
				REA ← TSIG;
				IF DEBUGX THEN DPYSHW(REA,OFFSET);
				IF REA≥TTEST THEN
				    BEGIN
				    OFFSAVE ← OFFSET;
				    DONE;
				    END;
			 	END "SHIFT";
			    END "ACO";
L1:			REACNT←REACNT+1;
			OK ← TRUE;
L2:			OFFSET ← OFFSAVE;
			I ← REA≥TTEST;
			RESULT[CNT,0] ← TX+LSIDE;
			RESULT[CNT,1] ← TY+FLINE;
			RESULT[CNT,2] ← I;
			IF ¬I THEN IF OK THEN OK←FALSE ELSE
				IF ¬FLAG THEN DONE;
			END "LOOP";
α	VERIFY body cont. - return results	;

		RESULT[0,0] ← CNT;
		RESULT[0,1] ← REACNT;
		RESULT[0,2] ← (REACNT*100+CNT-1) DIV CNT;
		IF EQU(JOB,"TTY") THEN
			BEGIN "TYPE"
			OUTSTR(CRLF);
			IF DEBUGX THEN  FOR I←1 STEP 1 UNTIL CNT DO
			    OUTSTR(CVS(RESULT[I,0])&","&CVS(RESULT[I,1])
				&"    "&(IF RESULT[I,2]
				THEN "TRUE" ELSE "FALSE")&CRLF);
			FOR I←0 STEP 1 UNTIL 2 DO
				OUTSTR(CVS(RESULT[0,I])&"    ");
			OUTSTR("%"&CRLF);
			END "TYPE" ELSE
ifc declaration(give_job) thenc

			IF EQU(THIS_JOB,CALL_JOB) THEN GIVE_JOB(RESULT) ELSE

	endc

			ISSUE(5,THIS_JOB,CALL_JOB,MESSAGE VER_RESULT(RESULT));
		END "INNER";

ifc distst thenc

	RELPOG(FRA);

	endc

	END "VERIF";


REQUIRE UNSTACK_DELIMITERS;
comment SETCOR - for main program debugging mode;

ifc main thenc

EXTERNAL SHORT INTEGER TVWORD,FLINE,LLINE,RSIDE,LSIDE;
SHORT INTEGER XM, YM;



COMMENT	position TV cursor by keyboard input and return left end in X,Y
		←→↑↓	move cursor by Q units in selected direction
		↔	alternate Q between 16 and 2
		E	exits from routine (returns true)
		D	exits from main loop (returns false)
	X,Y saved in XM,YM for starting position on next call	;

BOOLEAN PROCEDURE SETCOR(REFERENCE INTEGER X,Y);
	BEGIN INTEGER I, Q;
	SAFE INTEGER ARRAY BUF[1:20];
	EXTERNAL PROCEDURE TVMOVE;
	EXTERNAL PROCEDURE TVREAD;
	EXTERNAL INTEGER PROCEDURE GIOWD(INTEGER ARRAY FOO);
	EXTERNAL PROCEDURE TVIN;

	TVWORD ← GIOWD(BUF);
	Q ← 16;
	FLINE ← LLINE ← YM;
	RSIDE ← LSIDE ← XM;
	TVMOVE;
	WHILE TRUE DO
		BEGIN "MOVE"
		DO TVREAD UNTIL (I←INCHRS)≥0;
		IF I="←" THEN RSIDE←LSIDE←(RSIDE-Q) MAX 15 ELSE
		IF I="→" THEN RSIDE←LSIDE←(RSIDE+Q) MIN 250 ELSE
		IF I="↑" THEN FLINE←LLINE←(FLINE-Q) MAX 15 ELSE
		IF I="↓" THEN FLINE←LLINE←(FLINE+Q) MIN 330 ELSE
		IF I="↔" THEN Q ← IF Q=16 THEN 2 ELSE 16 ELSE
		IF I="E" THEN DONE ELSE
		IF I="D" THEN RETURN(FALSE);
		TVMOVE;
		END "MOVE";
	TVIN;
	X ← XM ← LSIDE;
	Y ← YM ← FLINE;
	RETURN(TRUE);
	END;
COMMENT	main program starts here;

PUT_DATA(0,0,"VERIFY");
YES_VER ← TRUE;
SETFORMAT(0,0);
XM ← 160;
YM ← 125;
L ← 4;
W ← 2;
WHILE TRUE DO
    IF RUN THEN
	BEGIN "MONMOD"
	INTEGER MESS;
	MESS ← GET_ENTRY('160,NULL,"VERIFY","VERIFY");
	JOB ← GET_DATA(1,MESS);
	QUEUE('600,MESS);
	END "MONMOD" ELSE BEGIN "TTYMOD"
	INTEGER COL, FLG, TV, XX, YY, X, Y;
	JOB ← "TTY";
	OUTSTR("DEBUG?");
	DEBUG ← INCHWL="Y";
	TYP_VER ← TRUE;
	OUTSTR("TV= ");
	TV ← CVD(INCHWL);
	OUTSTR("FILTER (0=RED, 1=BLUE, 2=GREEN, 3=WHITE, -1=ALL) = ");
	COL ← CVD(INCHWL);
	WHILE TRUE DO
		BEGIN "CALL"
		IF DEBUG THEN
			BEGIN
			OUTSTR("CHANGE OPERATOR?");
			IF INCHWL="Y" THEN
				BEGIN
				OUTSTR("LENGTH=");
				L ← CVD(INCHWL);
				OUTSTR("WIDTH=");
				W ← CVD(INCHWL);
				END;
			END;
		OUTSTR("POINT 1=");
		IF ¬SETCOR(X,Y) THEN DONE;
		OUTSTR("POINT 2=");
		IF ¬SETCOR(XX,YY) THEN DONE;
		OUTSTR("WHOLE LINE?");
		FLG ← INCHWL="Y";
		VERIFY(X,Y,XX,YY,TV,COL,FLG);
		END "CALL";
	END "TTYMOD";
END "VERIFY";

endc;